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riscv: cpufeature: Fix extension subset checking 

This loop is supposed to check if ext->subset_ext_ids[j] is valid, rather
than if ext->subset_ext_ids[i] is valid, before setting the extension
id ext->subset_ext_ids[j] in isainfo->isa.

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Fixes: 0d8295ed97 ("riscv: add ISA extension parsing for scalar crypto")
Link: https://lore.kernel.org/r/20240502-cpufeature_fixes-v4-2-b3d1a088722d@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Charlie Jenkins 2024-05-02 21:50:51 -07:00 committed by Palmer Dabbelt
parent e482eab4d1
commit e67e98ee89
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1 changed files with 1 additions and 1 deletions
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arch/riscv/kernel/cpufeature.c
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@ -603,7 +603,7 @@ static int __init riscv_fill_hwcap_from_ext_list(unsigned long *isa2hwcap)
if (ext->subset_ext_size) {
for (int j = 0; j < ext->subset_ext_size; j++) {
if (riscv_isa_extension_check(ext->subset_ext_ids[i]))
if (riscv_isa_extension_check(ext->subset_ext_ids[j]))
set_bit(ext->subset_ext_ids[j], isainfo->isa);
}
}